[SCSI] qla2xxx: add support for multi-queue adapter

Following changes have been made.
1. qla_hw_data structure holds an array for request queue pointers,
and an array for response queue pointers.
2. The base request and response queues are created by default.
3. Additional request and response queues are created at the time of vport
creation. If queue resources are exhausted during vport creation, newly
created vports use the default queue.
4. Requests are sent to the request queue that the vport was assigned
in the beginning.
5. Responses are completed on the response queue with which the request queue
is associated with.

[fixup memcpy argument reversal spotted by davej@redhat.com]
Signed-off-by: Anirban Chakraborty <anirban.chakraborty@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 14 insertions, 1 deletions

diff --git a/drivers/scsi/qla2xxx/qla_dbg.h b/drivers/scsi/qla2xxx/qla_dbg.h
index 2e9c0c097f5e..c1794a70a45f 100644
--- a/drivers/scsi/qla2xxx/qla_dbg.h
+++ b/drivers/scsi/qla2xxx/qla_dbg.h
@@ -4,6 +4,9 @@
  *
  * See LICENSE.qla2xxx for copyright and licensing details.
  */
+
+#include "qla_def.h"
+
 /*
  * Driver debug definitions.
  */
@@ -23,6 +26,7 @@
 /* #define QL_DEBUG_LEVEL_14 */ /* Output RSCN trace msgs */
 /* #define QL_DEBUG_LEVEL_15 */ /* Output NPIV trace msgs */
 /* #define QL_DEBUG_LEVEL_16 */ /* Output ISP84XX trace msgs */
+/* #define QL_DEBUG_LEVEL_17 */ /* Output MULTI-Q trace messages */
 
 /*
 * Macros use for debugging the driver.
@@ -43,6 +47,7 @@
 #define DEBUG2_11(x)    do { if (ql2xextended_error_logging) { x; } } while (0)
 #define DEBUG2_13(x)    do { if (ql2xextended_error_logging) { x; } } while (0)
 #define DEBUG2_16(x)    do { if (ql2xextended_error_logging) { x; } } while (0)
+#define DEBUG2_17(x)    do { if (ql2xextended_error_logging) { x; } } while (0)
 
 #if defined(QL_DEBUG_LEVEL_3)
 #define DEBUG3(x)       do {x;} while (0)
@@ -127,7 +132,6 @@
 #else
 #define DEBUG16(x)      do {} while (0)
 #endif
-
 /*
  * Firmware Dump structure definition
  */
@@ -266,8 +270,17 @@ struct qla2xxx_fce_chain {
         uint32_t eregs[8];
 };
 
+struct qla2xxx_mq_chain {
+        uint32_t type;
+        uint32_t chain_size;
+
+        uint32_t count;
+        uint32_t qregs[4 * QLA_MQ_SIZE];
+};
+
 #define DUMP_CHAIN_VARIANT      0x80000000
 #define DUMP_CHAIN_FCE          0x7FFFFAF0
+#define DUMP_CHAIN_MQ           0x7FFFFAF1
 #define DUMP_CHAIN_LAST         0x80000000
 
 struct qla2xxx_fw_dump {